Illustration2003 GMC 2500 HD 6.0L HAS AN ERRATIC SPEEDOMETER THAT IS A SAFETY ISSUE. *NM
2003 GMC Sierra 2500
Owner reports · Recalls · Investigations
More warning signs than most Sierra 2500 years
Owner complaints for the 2003 GMC Sierra 2500 are substantially higher than the model-year median of 46.
About this comparison →How this year compares
Owner complaints by model year
Compare all Sierra 2500 years →Counts vary with age, sales and reporting. They are not failure rates.
What owners reported most
All reported categories
Tap a category to read its complaints. One report may name several components.
When problems were reported
Mileage at the reported incident
140–25K
2825–50K
2950–75K
2075–100K
34100–150K
17150K+
142 reports with mileage · 18 unknown
NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.
What to inspect
Issues worth paying extra attention to based on owner reports.
- Service Brakes, Hydraulic. Review the 43 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Electrical System. Review the 36 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
- Service Brakes. Review the 28 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
NHTSA owner reports · September 18, 2026 snapshot.
7 crash reports4 fire reports4 injury reports
Electrical System complaints
36 reportsTHE VEHICLE HAS HAD FAILURE OF THE AIR CONDITIONER AND HEATING. RESULTED IN FIRED IN THE DASH BOARD WIRING TWICE. HAD BEEN IN THE SHOP FOR HEATING AND AIR CONDITIONER EIGHT TIMES. *JB
PULLING OUT OF A PARKING LOT ON WET PAVEMENT MY REAR TRUCK TIRES SPUN A BIT AND THEN WHEN I GOT ON THE ROAD TRAVELING ABOUT 50 MPH MY SPEEDOMETER READ 120 MPH! WHEN I CAME TO A COMPLETE STOP THE NEEDLE STAYED AT ABOUT 70 MPH. THE PROBLEM IS I DON'T KNOW HOW FAST I AM GOING, BUT I CAN GUARANTEE THAT IT WASN'T 120 MPH! :) TRUC…
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PULLING OUT OF A PARKING LOT ON WET PAVEMENT MY REAR TRUCK TIRES SPUN A BIT AND THEN WHEN I GOT ON THE ROAD TRAVELING ABOUT 50 MPH MY SPEEDOMETER READ 120 MPH! WHEN I CAME TO A COMPLETE STOP THE NEEDLE STAYED AT ABOUT 70 MPH. THE PROBLEM IS I DON'T KNOW HOW FAST I AM GOING, BUT I CAN GUARANTEE THAT IT WASN'T 120 MPH! :) TRUCK IS STILL NOT WORKING. VEHICLE IS A 2003 GMC 2500HD.*JB
I HAVE A 2003 GMC DIESEL PICKUP. I HAVE HAD THE VEHICLE IN TWICE FOR ELECTRICAL REPAIRS IN THE LAST 9 MONTHS. THE ELECTRICAL PROBLEMS OBSERVED INCLUDE: AIRCONDITIONER CUTTING IN/OUT, RADIO CUTTING IN/OUT, POWER WINDOWS NOT WORKING, DASH GAUGES CUTTING IN/OUT, IDIOT LIGHTS COMING ON (ABS, BRAKES, CHECK ENGINE ETC). IT WAS R…
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I HAVE A 2003 GMC DIESEL PICKUP. I HAVE HAD THE VEHICLE IN TWICE FOR ELECTRICAL REPAIRS IN THE LAST 9 MONTHS. THE ELECTRICAL PROBLEMS OBSERVED INCLUDE: AIRCONDITIONER CUTTING IN/OUT, RADIO CUTTING IN/OUT, POWER WINDOWS NOT WORKING, DASH GAUGES CUTTING IN/OUT, IDIOT LIGHTS COMING ON (ABS, BRAKES, CHECK ENGINE ETC). IT WAS REPAIRED ONCE BY THE DEALERSHIP AT A COST OF $500. NOW, 9 MONTHS LATER, THE VEHICLE IS BACK IN FOR THE EXACT SAME PROBLEM. THE TECHNICIAIN TOOK IT FOR A RIDE AND HAD SO MANY PROBLEMS, HE WAS AFRAID HE WOULDN'T MAKE IT BACK TO THE DEALERSHIP.
INSTRUMENT PANEL CLUSTER COMPONENTS FAILED THUS ALL GAUGES ON DASH BOARD WENT "FLAT"/BACK TO -0-; VEHICLE DID OPERATE HOWEVER COULD NOT EVEN READ HOW MUCH GAS WAS IN TANK. ALSO AS OF MILEAGE OF 13312 NOTICE VEHICLE BEGAN TO USE OIL, AS OF 26300 AFTER WATCHING THE VEHICLE NOTICED THAT IT WAS EXTREMELY LOW; APPARENTLY THE VEHIC…
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INSTRUMENT PANEL CLUSTER COMPONENTS FAILED THUS ALL GAUGES ON DASH BOARD WENT "FLAT"/BACK TO -0-; VEHICLE DID OPERATE HOWEVER COULD NOT EVEN READ HOW MUCH GAS WAS IN TANK. ALSO AS OF MILEAGE OF 13312 NOTICE VEHICLE BEGAN TO USE OIL, AS OF 26300 AFTER WATCHING THE VEHICLE NOTICED THAT IT WAS EXTREMELY LOW; APPARENTLY THE VEHICLE HAS BEEN LEAKING OIL ON THE INTAKE - LOOSING ALMOST 2 QUARTS OF OIL - ON A NEWER VEHICLE IT SHOULD NOT BE USING THIS MUCH OIL. *LA
WHEN THE CONSUMER MADE A STOP, HE NOTICED THE TRAILER BRAKES DID NOT WORK. THE CONSUMER THEN RECEIVED A NOTICE IN THE MAIL REGARDING THE WIRING HARNESS IN WHICH GMC HAD SWITCHED TWO OF THE WIRES ON THE TRUCK AT THE FACTORY. THE CONSUMER PURCHASED A NEW BRAKE CONTROLLER BECAUSE IT BURNED UP . *AK *JB
Official recalls
0No recalls in this snapshot.
Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗
NHTSA investigations
0No exact-year investigations in this snapshot.